Sublethal toxicities of 2,4-dinitrophenol as inferred from online self-reports
Abstract
INTRODUCTION: 2,4-dinitrophenol (DNP) is a mitochondrial toxin sometimes used as a weight loss agent. Reports of fatalities from DNP have been increasing since 2000, suggesting an increase in use. Our understanding of DNP toxicity in humans comes from reports to Poison Control and postmortem analyses, sources that are biased to more extreme presentations. This leads to a gap in our knowledge about the adverse effects of DNP at nonlethal doses. Here we investigate the doses and effects of DNP as reported online.
METHODS: We analyzed publicly available Internet posts that we collected from 2017-2019. The posts came from anonymous users or users who voluntarily self-identified. We collected data from websites whose terms of use allow for the secondary analysis of data that their users agree to make public. We used natural language processing techniques that we had previously developed to extract doses, effects, and substances mentioned in each post.
RESULTS: We collected 1,630 posts across 5 online forums and the Reddit forum r/DNP. The posts were from 1,234 unique usernames. The most commonly reported doses were between 150 to 300 mg each day followed by 300 to 450 mg each day. At those doses, the most reported adverse effects were profuse sweating and fatigue. Reports of thermoregulatory (sweating, feeling hot flashes or flushed), fatigue-related, and neurologically related symptoms were statistically significantly more frequent at reported daily doses greater than 150 mg…
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